1) Contributions: Tax free in /tax free out â An investor can take out the exact amount of his or her Roth IRA contributions at any time, for any reason without having to pay any tax or penalty â with one big caveat.
Freebase(0.00 / 0 votes)Rate this definition: Stereopsis is the impression of depth that is perceived when a scene is viewed with both eyes by someone with normal binocular vision. Binocular viewing of a scene creates two slightly different images of the scene in the two eyes due to the eyes' different positions on the head.
Coarse and fine stereopsis. There are two distinct aspects to stereopsis: coarse stereopsis and fine stereopsis, and provide depth information of different degree of spatial and temporal precision. Coarse stereopsis (also called gross stereopsis) appears to be used to judge stereoscopic motion in the periphery.